astronomy

SDSS J0841+0101

SDSS J0841+0101 is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand SDSS J0841+0101 rather than just read about it. In short: SDSS J0841+0101 is a type 2 Seyfert galaxy located in the constellation of Hydra. The redshift of the galaxy is (z) 0.110 and it was first discovered in 2008 by astronomers conducting the Sloan Digital Sky Survey (SDSS) who classified it as a type 2 quasar.

Key takeaways

SDSS J0841+0101 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect SDSS J0841+0101 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of SDSS J0841+0101 from memory before moving on to harder problems.

Reference excerpt

SDSS J0841+0101 is a type 2 Seyfert galaxy located in the constellation of Hydra. The redshift of the galaxy is (z) 0.110 and it was first discovered in 2008 by astronomers conducting the Sloan Digital Sky Survey (SDSS) who classified it as a type 2 quasar. This object is known to contain two active galactic nuclei with an estimated separation of 7.6 kiloparsecs.

Description SDSS J0841+0101 is categorized as an elliptical galaxy. It is currently undergoing a galaxy merger with two doubly ionized oxygen components present in the same location as the stellar bulges of the two merging galaxies. One of the stellar bulges on the northeast part of the galaxy contains an active X-ray nucleus and it is much more massive when compared to the stellar bulge on the southwest part of the galaxy. There is also radio emission found as extended and positioned between the bulge components. This is suggested to originate through either ionized or photoionized gas during the merger process. Both of the nuclei are thought to be offset. The star formation of the galaxy is estimated to be around 2.93.21.7 M☉ per year, with its stellar mass estimated as 10.600.340.42 M☉. A study has found SDSS J0841+0101 is a radio-quiet quasar. It has a somewhat compact radio structure made up of three components. The radio core is resolved and it is mainly associated with the quasar nucleus. Between the galaxies, there is a bright radio knot feature that overlaps with the filamentary gas. An outer knot feature is shifted by two arcseconds relative to the position of the nucleus and overlapping together with the galaxy located on the north side of the system. This indicates either the radio lobe or even the hotspot. There is also the presence of hydrogen-alpha emission in the galaxy. It is mainly detected towards the northeast direction until it reaches 21 kiloparsecs away from the quasar and also right up to around 14 kiloparsecs southwest of the other nucleus of the companion. This gas structures reminds as tidal features. In addition, there are radio knots tracing the path of the emission tail with the radio jet interacting with the interstellar medium. The galaxy also displays mass outflow rates of 24 M☉ yr−1, with an outflow power of 3.7 × 1042 erg s−1.

References

External links SDSS J0841+0101 on SIMBAD

Illustrations

Worked examples

Example 1 — a first encounter with SDSS J0841+0101

Start with the simplest possible case. Write down what SDSS J0841+0101 claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to SDSS J0841+0101 before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about SDSS J0841+0101 ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of SDSS J0841+0101

In research: SDSS J0841+0101 appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses SDSS J0841+0101 in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: SDSS J0841+0101 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Active galaxies, Astronomical objects discovered in 2008, Elliptical galaxies, so understanding it makes those chapters shorter.
In everyday life: Look for SDSS J0841+0101 outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study SDSS J0841+0101 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what SDSS J0841+0101 means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain SDSS J0841+0101 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is SDSS J0841+0101 in simple terms?

Why does SDSS J0841+0101 matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study SDSS J0841+0101?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on SDSS J0841+0101.